D r e a m

True Performance Never Fears Change

It Defies The Status Quo

16" f3.75 concave paraboloid

The left Ronchi image was the surface as provided by the outside optician. Clearly the surface was not smooth like they stated it was. The faint spikes that are eminating from the central shape are texture on the surface of the mirror; Mid-Spatial Frequency (MSF) errors - historically called primary ripple.

Dream had the coating stripped so both the figure and the smaller-scale surface could be improved, which is shown on the right.

"The original mirror’s finish was horrible. You have done an excellent job in improving the finish. It is as close to theoretical as possible. I really appreciate all the extra effort. Again, thanks for all your extra time to get the mirror right."

"I really appreciate the details. You do great work and that is why I have been very patient with the process. The extra effort you put into your products is amazing. There is NO company out there that is as driven as you to strive for the best. I look forward to using the exceptional telescope you have created."

"Again, thanks for all your hard work and tenacity."

- Dream customer for this mirror/telescope

Mike Lockwood
Lockwood Custom Optics
Lockwood Optics

The outside optician's surface was slightly overcorrected at the 70% zone.

The outside optician also left a central hill that could have been reduced in roughly four minutes of work, or eliminated completely, as Dream's finishing illustrates.

The outside optician also stated the radius was within 1/8" of what Dream requested. As provided the radius was short by 1-3/4" (off by 1.5%). The 16" f3 paraboloid that Dream finished in-house for the IR telescope was off by 0.009% (167x closer).

Contact Dream to discuss your project's needs.

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